package org.exobel.routerkeygen;

import android.content.res.Resources;
import android.os.Handler;
import android.os.Message;
/*
*
* Algorithm:
* Can be consulted here:
* http://websec.ca/blog/view/mac2wepkey_huawei
* It has nice graphics that explain it all.
* */
public class HuaweiKeygen extends KeygenThread {

	
	
	public HuaweiKeygen(Handler h, Resources res) {
		super(h, res);
	}

	// Java adaptation of mac2wepkey.py from
	// http://websec.ca/blog/view/mac2wepkey_huawei
	final int [] a0= {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
	final int [] a1= {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
	final int [] a2= {0,13,10,7,5,8,15,2,10,7,0,13,15,2,5,8};
	final int [] a3= {0,1,3,2,7,6,4,5,15,14,12,13,8,9,11,10};
	final int [] a4= {0,5,11,14,7,2,12,9,15,10,4,1,8,13,3,6};
	final int [] a5= {0,4,8,12,0,4,8,12,0,4,8,12,0,4,8,12};
	final int [] a6= {0,1,3,2,6,7,5,4,12,13,15,14,10,11,9,8};
	final int [] a7= {0,8,0,8,1,9,1,9,2,10,2,10,3,11,3,11};
	final int [] a8= {0,5,11,14,6,3,13,8,12,9,7,2,10,15,1,4};
	final int [] a9= {0,9,2,11,5,12,7,14,10,3,8,1,15,6,13,4};
	final int [] a10= {0,14,13,3,11,5,6,8,6,8,11,5,13,3,0,14};
	final int [] a11= {0,12,8,4,1,13,9,5,2,14,10,6,3,15,11,7};
	final int [] a12= {0,4,9,13,2,6,11,15,4,0,13,9,6,2,15,11};
	final int [] a13= {0,8,1,9,3,11,2,10,6,14,7,15,5,13,4,12};
	final int [] a14= {0,1,3,2,7,6,4,5,14,15,13,12,9,8,10,11};
	final int [] a15= {0,1,3,2,6,7,5,4,13,12,14,15,11,10,8,9};
	final int [] n1= {0,14,10,4,8,6,2,12,0,14,10,4,8,6,2,12};
	final int [] n2= {0,8,0,8,3,11,3,11,6,14,6,14,5,13,5,13};
	final int [] n3= {0,0,3,3,2,2,1,1,4,4,7,7,6,6,5,5};
	final int [] n4= {0,11,12,7,15,4,3,8,14,5,2,9,1,10,13,6};
	final int [] n5= {0,5,1,4,6,3,7,2,12,9,13,8,10,15,11,14};
	final int [] n6= {0,14,4,10,11,5,15,1,6,8,2,12,13,3,9,7};
	final int [] n7= {0,9,0,9,5,12,5,12,10,3,10,3,15,6,15,6};
	final int [] n8= {0,5,11,14,2,7,9,12,12,9,7,2,14,11,5,0};
	final int [] n9= {0,0,0,0,4,4,4,4,0,0,0,0,4,4,4,4};
	final int [] n10= {0,8,1,9,3,11,2,10,5,13,4,12,6,14,7,15};
	final int [] n11= {0,14,13,3,9,7,4,10,6,8,11,5,15,1,2,12};
	final int [] n12= {0,13,10,7,4,9,14,3,10,7,0,13,14,3,4,9};
	final int [] n13= {0,1,3,2,6,7,5,4,15,14,12,13,9,8,10,11};
	final int [] n14= {0,1,3,2,4,5,7,6,12,13,15,14,8,9,11,10};
	final int [] n15= {0,6,12,10,9,15,5,3,2,4,14,8,11,13,7,1};
	final int [] n16= {0,11,6,13,13,6,11,0,11,0,13,6,6,13,0,11};
	final int [] n17= {0,12,8,4,1,13,9,5,3,15,11,7,2,14,10,6};
	final int [] n18= {0,12,9,5,2,14,11,7,5,9,12,0,7,11,14,2};
	final int [] n19= {0,6,13,11,10,12,7,1,5,3,8,14,15,9,2,4};
	final int [] n20= {0,9,3,10,7,14,4,13,14,7,13,4,9,0,10,3};
	final int [] n21= {0,4,8,12,1,5,9,13,2,6,10,14,3,7,11,15};
	final int [] n22= {0,1,2,3,5,4,7,6,11,10,9,8,14,15,12,13};
	final int [] n23= {0,7,15,8,14,9,1,6,12,11,3,4,2,5,13,10};
	final int [] n24= {0,5,10,15,4,1,14,11,8,13,2,7,12,9,6,3};
	final int [] n25= {0,11,6,13,13,6,11,0,10,1,12,7,7,12,1,10};
	final int [] n26= {0,13,10,7,4,9,14,3,8,5,2,15,12,1,6,11};
	final int [] n27= {0,4,9,13,2,6,11,15,5,1,12,8,7,3,14,10};
	final int [] n28= {0,14,12,2,8,6,4,10,0,14,12,2,8,6,4,10};
	final int [] n29= {0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3};
	final int [] n30= {0,15,14,1,12,3,2,13,8,7,6,9,4,11,10,5};
	final int [] n31= {0,10,4,14,9,3,13,7,2,8,6,12,11,1,15,5};
	final int [] n32= {0,10,5,15,11,1,14,4,6,12,3,9,13,7,8,2};
	final int [] n33= {0,4,9,13,3,7,10,14,7,3,14,10,4,0,13,9};
	final int [] key= {30,31,32,33,34,35,36,37,38,39,61,62,63,64,65,66};
	final char [] ssid= {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};

	public void  run(){
		if ( router == null)
			return;
		if ( router.getMac().length() != 12 ) 
		{
			handler.sendMessage(Message.obtain(handler, ERROR_MSG , 
					resources.getString(R.string.msg_errpirelli)));
			return;
		}
		int [] mac = new int [12];
		for ( int i = 0 ; i < 12 ; ++i)
		{
			mac[i] =  Integer.parseInt(router.getMac().substring(i, i+1), 16);
		}
		int s1=(n1[mac[0]])^(a4[mac[1]])^(a6[mac[2]])^(a1[mac[3]])^(a11[mac[4]])^
				(n20[mac[5]])^(a10[mac[6]])^(a4[mac[7]])^(a8[mac[8]])^(a2[mac[9]])^
				(a5[mac[10]])^(a9[mac[11]])^5;
		int s2=(n2[mac[0]])^(n8[mac[1]])^(n15[mac[2]])^(n17[mac[3]])^(a12[mac[4]])^
				(n21[mac[5]])^(n24[mac[6]])^(a9[mac[7]])^(n27[mac[8]])^(n29[mac[9]])^
				(a11[mac[10]])^(n32[mac[11]])^10;
		int s3=(n3[mac[0]])^(n9[mac[1]])^(a5[mac[2]])^(a9[mac[3]])^(n19[mac[4]])^
				(n22[mac[5]])^(a12[mac[6]])^(n25[mac[7]])^(a11[mac[8]])^
				(a13[mac[9]])^(n30[mac[10]])^(n33[mac[11]])^11;
		int s4=(n4[mac[0]])^(n10[mac[1]])^(n16[mac[2]])^(n18[mac[3]])^(a13[mac[4]])^
				(n23[mac[5]])^(a1[mac[6]])^(n26[mac[7]])^(n28[mac[8]])^(a3[mac[9]])^
				(a6[mac[10]])^(a0[mac[11]])^10;
		String ssidFinal = Character.toString(ssid[s1]) + Character.toString(ssid[s2]) + 
				Character.toString(ssid[s3]) + Character.toString(ssid[s4]);
		int ya=(a2[mac[0]])^(n11[mac[1]])^(a7[mac[2]])^(a8[mac[3]])^(a14[mac[4]])^
				(a5[mac[5]])^(a5[mac[6]])^(a2[mac[7]])^(a0[mac[8]])^(a1[mac[9]])^
				(a15[mac[10]])^(a0[mac[11]])^13;
		int yb=(n5[mac[0]])^(n12[mac[1]])^(a5[mac[2]])^(a7[mac[3]])^(a2[mac[4]])^
				(a14[mac[5]])^(a1[mac[6]])^(a5[mac[7]])^(a0[mac[8]])^(a0[mac[9]])^
				(n31[mac[10]])^(a15[mac[11]])^4;
		int yc=(a3[mac[0]])^(a5[mac[1]])^(a2[mac[2]])^(a10[mac[3]])^(a7[mac[4]])^
				(a8[mac[5]])^(a14[mac[6]])^(a5[mac[7]])^(a5[mac[8]])^(a2[mac[9]])^
				(a0[mac[10]])^(a1[mac[11]])^7;
		int yd=(n6[mac[0]])^(n13[mac[1]])^(a8[mac[2]])^(a2[mac[3]])^(a5[mac[4]])^
				(a7[mac[5]])^(a2[mac[6]])^(a14[mac[7]])^(a1[mac[8]])^(a5[mac[9]])^
				(a0[mac[10]])^(a0[mac[11]])^14;
		int ye=(n7[mac[0]])^(n14[mac[1]])^(a3[mac[2]])^(a5[mac[3]])^(a2[mac[4]])^
				(a10[mac[5]])^(a7[mac[6]])^(a8[mac[7]])^(a14[mac[8]])^(a5[mac[9]])^
				(a5[mac[10]])^(a2[mac[11]])^7;
		pwList.add(Integer.toString(key[ya]) + Integer.toString(key[yb]) + 
				Integer.toString(key[yc]) + Integer.toString(key[yd]) + 
				Integer.toString(key[ye]) );
		handler.sendEmptyMessage(RESULTS_READY);
		if ( !router.getSSIDsubpart().equalsIgnoreCase(ssidFinal) && 
				router.ssid.startsWith("INFINITUM") )
		{

			handler.sendMessage(Message.obtain(handler, ERROR_MSG , 
					resources.getString(R.string.msg_err_essid_no_match)));
		}
		return;
	}
}
